<template>
    <div class="list" ref='wrapper'>
         <div>
            <div class="area">
                <div class="title border-topottom">当前城市</div>
                <div class="button-list">
                    <div class="button-wrapper" >
                        <div class="button">{{this.currentCity}}</div>
                    </div>
                </div>
            </div>
            <div class="area">
                <div class="title border-topbottom">热门城市</div>
                <div class="button-list">
                    <div class="button-wrapper" v-for="item of hot" :key='item.id' @click = 'handleCityClick(item.name)'>
                        <div class="button">{{item.name}}</div>
                    </div>

                </div>
            </div>

            <div class="area" v-for="(item,key) of cities" :key='key' :ref="key">
                <div class="title border-topbottom">{{key}}</div>
                <div class="item-list">
                    <div class="item border-bottom" v-for="inneritem of item" :key="inneritem.id" @click = 'handleCityClick(inneritem.name)'>{{inneritem.name}}</div>
                </div>
            </div>

        </div>
    </div>
</template>
<script>
import BScroll from 'better-scroll'
import {mapState, mapMutations} from 'vuex'
export default {
    name: 'CityList',
    mounted() {
        this.scroll = new BScroll(this.$refs.wrapper)
    },
    props: {
        hot: Array,
        cities: Object,
        letter: String
    },
    computed: {
        ...mapState({
            currentCity:'city'
        })
    },
    watch: {
        letter() {
            if(this.letter){
                const element = this.$refs[this.letter][0]
                this.scroll.scrollToElement(element)
            }
        }
    },
    methods: {
        handleCityClick (city) {      
            this.changeCity(city)
            this.$router.push('/')
        },
        ...mapMutations(['changeCity'])
    }
}
</script>

<style lang="stylus" scoped>
@import '~styles/varibles.styl';
.border-topbottom
    &:before
        border-color #ccc
    &:after
        border-color #ccc
.border-bottom
    &:before
        border-color #ccc
    &:after
        border-color #ccc
.list
    overflow hidden
    position absolute
    top 1.58rem
    left 0
    bottom 0
    right 0

    .title
        line-height .54rem
        padding-left .2rem
        background #eee
        color #666
        font-size .26rem
    .button-list
        padding .1rem .6rem .1rem .1rem
        overflow hidden
        .button-wrapper
            width 33.33%
            float left
            .button
                margin .1rem
                padding .1rem 0
                border  .02rem solid #ccc
                text-align center
                border-radius .06rem
    .item-list
        .item
            line-height .76rem
            padding-left .2rem
</style>